I was going through the figure 10 of page 35 of nRF24L01+ product specifications and found that when an ACK is received, it checks for only ACK payload. Does it mean that the receiver only send ACK packets when the checksum is OK using CRC. Does it send Negative ACK packet indicating that CRC checksum is not valid. It means that the only time the packets are retransmitted if the ARD time elapsed with limit of retry limit and not if there is a negative ACK packet? Could anyone kindly clarify?
